<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    const url = `http://www.baidu.com?a=1&b=2&c=3`;
    // url.split("?")[1].split("&");//['a=1','b=2','c=3']
    const re = url
      .split("?")[1]
      .split("&")
      .reduce((p, c) => {
        const [key, value] = c.split("=");
        p[key] = value;
        return p;
      }, {});
    console.log(re);
  </script>
</body>

</html>